Adjustable window-screen



(No Model.)

J. E. SYMES.

ADJUSTABLE WINDOW SCREEN.

Elfi.. WTVESSES- Patented Peb. 22, 1898.

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UNITED STATES PATENT OFFICE JAMES E. SYMES, OF BANCROFT, MICHIGAN.

ADJUSTABLE WINDOW-SCREEN.

SPECIFICATION forming part Of Letters Patent N0. 599,664, dated.February 22, 1898. Application iiled September 1l, 1897. Serial No.651,274. (No model.)

To @ZZ whom it may concern:

Be it known that I, JAMES E. SYMEs, acitizen of the United States,residing at Bancroft, county of Shiawassee, State of Michigan, haveinvented a certain new and useful Improvement in AdjustableWindow-Screens; vand I declare the following to be a full, clear, andexact description of the invention, such as will enable others skilledin the art to which it appertains to make and use the same, referencebeing had to the accompanying drawings, which form a part of thisspecication.

My invention has for its object certain new and useful improvements inan adjustable window-screen and it consists of the construction,combination, and arrangement of devices and appliances hereinafterdescribed and claimed, and illustrated in the accompanying drawings, inwhich- Figure l is a view in perspective illustrating my invention, thewing-frame being shown in opened position. Fig. 2 is a similar view ofthe screen from the opposite side from that shown in Fig. 1, thewing-frame being partially in closed position; Fig. Sis a view insection on the line 3 3, Fig. l. Fig. 4is a View in section on theliner-l 4, Fig. l. Fig. 5 is a detail view in perspective of one oftheside bars of the main frame. Fig. 6 is a similar View of one of the sidebars of the wingframe, and Fig. 7 is a similar view of one of the endbars of the frame.

The purpose of my invention is to produce a self-supporting adjustablewindow-screen of simple construction which may be economicallymanufactured and a frame which may readily be adj usted intovariouslocations and positions to fit various sizes of windows and which willafford least restriction of the airspace, all which objects are securedby the construction and combination of parts herewith illustrated anddescribed.

I carry out my invention as follows:

A represents the main frame, constructed with two side bars a. a ofsimilar construction and of two end bars a a of similar construction.

B isa Wing-frame madewith three sides,

constructed with two similar side bars b h and one end bar b'.

The frame A is rectangular in form and is provided with a screen fabricC, preferably mounted thereupon flush with the face of the frame, asshown'in. the drawings.

B is a screen fabric engaged with the wingframe, preferably also flushwith the face of the frame. The two side bars b b of the wingframe aremounted upon the corresponding side bars ct a of the main frame in sucha manner that the screen fabric of the wingframe will slide over theface of the fabric on the main frame in immediate proximity thereto. Theside bars a a of the main frame are cut away on one side thereof, asindicated at a2, leaving the opposite face of the side bar projectingfull width to the outer edge, forming a way a3 for the correspondingside bars of the wing-frame. Said side bars of the main frame are alsoconstructed with a longitudinal channel a4, intermediate the front andback surfaces thereof, forming a guidechannel for a correspondingportionor tongue of the adjacent side bar of the wing-frame, whereby thecorresponding side bars of the main frame and of the wing-frame have atongue-and-grooved connection one with the other.' The channel or grooved? is cut down below the cutaway portion a2 of the side bars a ct. Thetwo said bars a, ct of the main frame may be constructed by running thebars through a sticker by a single operation,said two` side bars beingalike in construction, as hereinbefore described. After being thusformed by a sticker the extremities of said side bars a ct are to bemortised,as indicated at a5, to receive a corresponding tenon of theadjacent end bar of the main frame. The two end bars of the main frameare of like construction, said bars being constructed with tenons a6 toenter the groove d5 of the side bar, the tenons of said bar adjacent tothe wing-frame being cut away to receive the corresponding side bars ofthe wing-frame.

The end bar b' of the wing-frame is analogous in construction to the.end bars of the main frame, except that the said end bar b j is formedwith grooves b2 at its extremities to receive corresponding tenons b3 ofthe side bars of the wing-frame. The said bars l) l) of the wing-frameare made narrower than the Side bars of the main frame, as shown, andare constructed with a tongue b, entering the groove a4 of the ad jacent side bars of the main frame. Said side bars of the win g-frameride in the cut-away portion in the corresponding side bars of the mainframe, as indicated in the drawings, and their faces carrying the screenfabric are approximately in the same plane, or so nearly so as to permitthe two screen fabrics of the main frame and of the wing-frame to slidepast one another in close proximity. It will be seen that by thetongueand-grooved connection of the side bar of the wing-frame with theside bars of the main frame the two framesare adj ustably secured one tothe other, so as to prevent their lateral disengagement. This isaccomplished, essentially, by the tongues of the wing-frame in thecorresponding channels of the main frame. It will be obvious also at thesame time that the engagement of the side bars of the two frames the onewith the other is such as to prevent a vertical disengagement of the onefrom the other. By this means the two frames are always held inadjustable engagement together, permitting a free reciprocation of thewing-frame without any liability of its disengagement from the mainframe.

The adjustable wing-frame is held in an extended position by means of aspring D, which is secured to that bar a of the main frame which isadjacent to the wing-frame in any suitable manner. This spring ispreferably formed from spring-wire and is provided with a coil D', closeto the end d, which is secured to the said bar a by being driven intoit. This wire after being coiled is bent, essentially, at right anglesand is passed through the opening a7 in the bar. After the end of thewire has been passed through the openin g a7 it is secured to the bar bof the wing-frame in any suitable manner. As the wing frame is movedback and forth in relation to the main frame the wire plays back andforth through the opening a7, and the wing-frame will be forcedoutwardly in relation to the main frame until the straight portion (Z2strikes against the end bar of the main frame. lVhen the wing-frame isforced inwardly, the straight portion d2 is forced away from the end barof the main frame, and the spring assumes substantially thepositionshown in Fig. 2; but as soon as the wing-frame is released the springforces it outward to its full extent, as shown in Fig. l, and then thestraight portion (Z2 of the spring rests against the end bar a. Theouter end of the spring-wire d3, passing through the end piece of themain frame,yields when the wing-frame is partially or wholly closed inthe are of a circle, as indicated in Fig. 2. By this means thewing-frame may be adjusted outwardly or inwardly toward or from the mainframe readily, as may be desired, the force of the spring acting uponsaid wing-frame tending to force it outward and hold the wingfra1nefirmly against the jamb of the window-frame at any point within thelimit of its movement.

Projecting from the end bars of the wingframe and of the main frame aresharpened pins (indicated at E) adapted to enter the jambs of thewindow-frame and securely retain the same in place in any position whereit is desired to locate the screen. This construction of the screenenables it to be used either inside or outside of the sash or above orbelow the sash, as may be desired. The screen-frames have a plainsurface throughout the inner surface of the main and wing frames, sothat when placed on either side of the sash the space is effectuallyclosed. The spring D, it will be observed, is located at one side of thelongitudinal center of the end bar of the main frame, the outer endportion passing through the end bar of the main frame near itslongitudinal center and engaging the longitudinal center of the end bar.of the wing-frame.

The side rails of the wing-frame are, as will be seen, narrowerlaterally and also narrower vertically than the corresponding rails ofthe main frame.

It will be observed that the side bars of the main frame are cut awaylongitudinally 011 their outer edges, as at a2, and that thelongitudinal channels a4 project inwardly, while the tongues of the sidebars of the win g-frame project inwardly to engage said grooves.

That I claim as my invention is- 1. In an adjustable windowscreen,thecombination of a main frame, a movable wingframe adj ustabl y mounted onthe main frame, screen fabric engaged with both said frames, a springconnected with the main frame at one side the longitudinal center of theend piece of the main frame adjacent to the wing-frame, said springformed with an outer arm passed through said end rail of the main frameand connected with the end rail of the wing-frame, substantially as setforth.

2. In an adjustable screen, the main frame carrying a screen fabric andprovided with an opening through its inner end for the passage of thespring, a wing-frame carrying a screen fabric and movably mounted uponthe main frame,combined with a spring which has one of its ends securedto the end bar of the main frame, and its other end to pass through theopening in the main frame and secured to the outer end of thewing-frame, the spring being constructed and arranged to operate,substantially as described.

3. In an adjustable windowscreen,the combination of a main frame, amovable wing- IOO IOS

IIO

- frame adj ustably mounted on the main frame, said Wing-frame isyieldingly heldin extended screen fabric engaged with both said frames,position, the lateral arm of the spring serving and a spring mounted onthe inner edge of as a stop when the Wing-frame is fully eX- the end barof the main frame adjacent to the tended, substantially as set forth.

5 Wing-frame provided with a1atera11y-eXtend-- In testimony whereof Isign this specica- 15 ed yielding arm, and an outer arm extended tion inthe presence of two Witnesses. at a right angle to said lateral arm andpassed JAMES E. SYMES. through the adjacent end bar of the mainWitnesses: frame, said outer arm of the spring engaged EDWIN P. SHERMAN,

to with the end bar of the Wing-frame, whereby HELEN OHARA.

